Electric flat-iron.



T. VAN, ALLER. ELECTRIC FLAT IRON. APPLIOATION ULEB 111112.18, 1909.

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'Wtnessesy Inventor:

' .Tgcho Van )fil Ier,

Nitty .Patented 001.2511910.

massa UNITED STATES PATENT oEEIoE.

TYCHO VAN ALLER, 0F SCHENECTADY, NW YORK, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION 0F NEW YORK.

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Be it known that I, Trono Van ALLER, a citizen of the United' States, residing at Schenectady, in the county of Schenectady effect a high eihciency, whi e the 'construction 'and arrangement of the arts are so. simplified and improved that t Ve iron can be con- :veniently operated and may produced atalow cost.. A In the construction oflat irons, 1t has been found desirable to have the heat Stor-- age as near as possible tothe work to b done; in other words, between the 'heat unit and the work. I have also found thatl by far the largest part 'ofthe work of the iron is done around the edge of the'iron. It is desirable therefore, that the heat be applied around trated at the edge, so that the heat-.will flow quickly to the work; vIn carrying -out my invention therefore I srrange' .the body of the iron in such a' way that .the heat is a -plied only to a narrow 'strip around t 1e outen ed e of the iron, so that an ecien't distribution of the heat will be obtained. I also have the mass'ofmetal under4 the unit insteadof on`-top of it and` the inner invention embodied in concrete tbrm for purposes of illustration.

In the drawin Figure 1 represents a sideelevation oft e complete flat iron; Fig.

2 represents a longitudinal section thereof lwith theihandle partly '-broken away; Fig.

' i ion partial] 3 represents a plan view of the ironwith the upper plates removed and the micaiusulabroken away;- and Fi 4 shows a. letai o f the connecting terinina s.

Specification of Letters Patent. Application mcircbrmy is, 1909. scnai nc. 478,618.

so that the portion w :forni-of .unit iused Lthe'outside of the iron and that the greatest mass ofrnetal likewise he 'concem` unit-is produced of storage Ain the Patented oct. 25, i910.

Referring to .the drawings, 10 represents the body o the iron, which may be of' cast iron or any desired metal'and is of any de- 'sired shape, ns for instance, the conventional shapeA shown in the-drawing. This -body has the center chambered out at l1, the shape of the chambered portion being substan tially theshape of the iron. The outer-portion of the iron is thicker than the inner portion and the thickest portion is at the surface 1.2, which is' `to be finished Vor ma chmed to receive the. heat'unit 13. In other words, 'the greatest thickness of the body of the iron is between the heating unit and Vthe face of the iron.- The heating unit 13,

shown, in the form of a flat strip extendmg around the iron parallel with the edge,

the -outsideedge of the iron. The unit is placed as near as' practicable tothe edge f the ironso that the heat will be concentrated -at the edge. which first meets the damp. Surface in .ironin in4 is iron -forms no part vof my invention, although I .have

ls'hownffor purposes of illustration the form cfccic which is acsccibcd and cicimcdA in m' previous application, Serial No. 444,908. is unit has roved very satisfactory and 1s very well .a

y winding a ilatresistance ribbon in thelform of' a spiral and then atteningthe spiral down on to itself. The resistance ribbon used may' be of the high reslstanee type, which forms a -1m of 1nich is heated is simply The particular ted forthis purpose. The I sulation' upon the surface when heated, so i that the lturns may be in contact 'with' each other without short-circuiting.. This unit -is laid upon the iinished or machnedsurface-12, stripsof'mica, 14, being on Aeither side' of the unit.- A cover 15, Alikewise having the surface aroun the 'outer ed e machined for engagement with placed one the unit, 1s 'pinned over the unit and screwed' to the body 10. Plate-15 is preferably of relativelythinnermetal than the body of the iron, so that'there' will be practically 'nostoratie of heat above the unit. -It is evident atif there were any great amount late '15, that-in travelin to. the work, theeat would have to trav late " by Letters Patent of the United .States`,-.is,

u long distance und travel back through the unit, ivhcrcas if onl the lower plate has storagecapacity the eat is delivered to the work much more quickly and eiciently. This plate is-held to the body by ine-.ins of cap screws 16, which pass through the plate und are tapped into the body. The terminals of, the unit are brought out, as shown, to terminal pins 17, -whiclr are mountedin a hood or casing 18. A sheet iron cover 19 is then placed over the cover pirate and rests in contact with the body, the hood 18 assin through the-cover.- This cover is held in p ace byl means of a screw 20, 4which is tapped into the cover plate. A handle 21 is riveted to the cover as shown. 'It will be seen that I have'provided a fiat. iron which is very inexpensive to construct aiid at the same time 'has the heat concentrated at the parts wliere'it will be of the greatest service. The heat storage is likewise so located that the heatwill .flow

lto the work quickl While I have shown my device as oonstructed in a specific manner in accordance with the patent statutes,`it should be'understood that I do not limit 'my invention thereV to, since various modifications 'will suggest themselves to those skilled in the art, without departing from the s irit 'of my`invention, the scope of wliic the annexed claims. y

What I cla-im asnew and desire to'securef 1-. An electric flat ironcomprisinga body ',liaving a narrow. resistance strip extending atwi'se around lts. outer portion ad cent having 'a narrow resistance Psis to the edge and therewith.A

2. An electric Hat iron conprising a body rip extend` flatliyise around its outerportion 'parall wit in heat conductive ,ation the edge and ,rin heat conductive rela- 3. `An electric'ilat iron comprisiii having a narrow dat resistance atwisc upon its outer edge and in ductive relation therewith so as rip laid heat com' to leave A the inner 'portion substantially theishape of the iron. "4. An electric flat iron comprising a portion having n. dat resistance unit l'lai tla'twise upon its outer edge and 'a flat stri secured to the body portion to hold the unit 5. An electric flat 'iron comprising a bodA having its outer "rtion ofK thicker meta than its inner po ion and are'sistaiice unit ari-an to applr heat to the'outer portion. 6. n electric at iron comprising a body having` its .outer portion of thicker metal 'than' itsinner portion anda resistance unit 'in intimate conductive relation .with the 'I ontciporton, .I

7. An electric flat ironcomprising a body is ser forni in' than its inner cindy.

having 'a c hambered inner portion and a' narrow resistance strip extending around saidcliii-mbered portion.A

8. An electric flat iron comprising a body having theinner portion thinner than the outer portion andl of substantially the shape of the body and a narrow resistance strip of the outer .portion spacedfroni the outer edge. v

11. An-electricilat 'iron com rising a body portion,'-a heatin .uiiit there or, a terminal support indepen ent -of saidbodyhaving terminal .pins rigidly secured thereto, and a -cover for said body'arranged. to hold said support in 12. An e portion havin a ilat resistance. iinitl laid ilatwise 'upon t o .outer ed' of the body and aflat metallic platev of t,- inner metal than the bodyortion engaging theiinit for hold,- 'ingituii' erpressure.

13.".An electric dat iron having lplace.

comprising a body intimate'therina l u tion -an'da flat lplate ofthinner metal than tney-for im ding the resiscanin piaceundeisfressure. f W.

'14. x electric' dat iron comprising .a body, a dat resistonceunt extending around its' outer portion, a metallic Vplate secured to and a'removablecoverA over said' plate; 15. An electric flat iron comprising a body, a flat resistance unit 'extending around `its outer portion, a metallic plate secured to the bod'y portion to hold the gnit in place, and a removable cover over said -plat'e 'and out of-oontact therewith.

`,16. An electric dat iron. comprising a body, a dat resistance unit extending'around its outer portion,- a metallic 'plate secured to the body portion to lio1d`tlie'unitin placc' .and a' removable cover over'said plate hel in pzlaoAe independently of the plate.l

1 n body, a dat resistance iinit extend' ,the outer rtion thereof, a meta ic plate secured to e body portion and holding the unit in place, and a terminal support independent of said body portion and-having terminal pins rigidly secured thereto.

18. An electricilatiron` comprising a Y body, a dat resistance iinit'extcndi around the outer portion thereof, n metil ic plate its outer 4portion of 'thiiiiier'l metalrtion, a .resistanccfuiit 'in relation `with the outer porectric flat iron comprising a body ioo V the body .portion ,to hold the unit inzplace izo iso

therewith, and uy metallic plate of thinner' metal bhanjhe body secured to the body to entof suxd body Innung terminal pins 1'i idly hold the resistance unit iu pince under securedthereto, und u cover for said. ody pressure. 5 urruugedyto hold said supporti in place. In witness whereof, l have hereunto Het .t5

19. A11-electric flat iron coinprisl a body my hand this 16th day of February, 1909, havin itsinner portion chambergg out' so ,i TYCHO VAN ALLER. fas to ea-ve a; narrow ridge around the 0ut- Witnesses:

side, aat, I'esista'nceunit mounted upon BENJAMIN B. HULL, 10- said ridgegld in heat co1\ductive relation HELEN Omoim.l

rsecured to the body portion for holt-ling the unit iu place, a terrninul support independ- 

